Suddenly" - A severe car crash involving an entire family results in an all-hands-on situation in the ER, as the eldest daughter is left to make the toughest decision of her life. Meanwhile Teddy, still in the dark about Henry's death, calls upon Cristina to help with her patient in the O.R., and Lexie finds herself working alongside Mark's new girlfriend, Julia, during an eye surgery on Grey's Anatomy, THURSDAY, JANUARY 5 (9:00-10:02 p.m., ET) on the ABC Television Network.